A high-precision servo valve transmission mechanism

Abstract

The application belongs to the technical field of transmission mechanism, and particularly relates to a high-precision servo valve transmission mechanism, which comprises a support connecting assembly, a power input module arranged on the support connecting assembly, a valve arranged on the support connecting assembly, and a power transmission module arranged on the support connecting assembly and located between the power input module and the valve. The power transmission module is used to transmit the power of the power input module to the valve to control the opening or closing of the valve. The movement direction of the power transmission module comprises horizontal plane rotary movement and vertical plane up-down movement. The power transmission module realizes the opening or closing of the valve by converting the rotary movement of the power input module into up-down movement. The application can reduce the structural volume of the transmission mechanism.

Description

Technical Field

[0001] This invention belongs to the field of transmission mechanism technology, and in particular relates to a high-precision servo valve transmission mechanism. Background Technology

[0002] Traditional manual needle valves are primarily used for continuous and precise adjustment of gas flow. In intelligent upgrades, they need to be integrated with servo motors to achieve remote, digital control. When adjusting the valve opening, the valve stem moves up and down, necessitating a floating mechanism to mitigate this movement. Current technologies often use a coupling to directly connect the valve stem and motor shaft, with the motor mounted on a guide rail to achieve floating. The biggest drawback is that adding the guide rail and slider significantly increases the radial dimension of the structure relative to the motor, severely limiting its application in confined spaces.

[0003] Therefore, a high-precision servo valve transmission mechanism needs to be designed to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision servo valve transmission mechanism to solve the above-mentioned problems and reduce the volume of the transmission connection structure.

[0005] To achieve the above objectives, the present invention provides the following solution: a high-precision servo valve transmission mechanism, comprising: a support connection assembly; a power input module disposed on the support connection assembly, the power input module being used to provide power input; a valve disposed on the support connection assembly; and a power transmission module disposed on the support connection assembly, the power transmission module being located between the power input module and the valve, the power transmission module being used to transmit the power from the power input module to the valve to control the valve to open or close; the movement direction of the power transmission module includes rotational movement in the horizontal plane and vertical movement in the vertical plane, the power transmission module realizing the opening or closing of the valve by converting the rotational movement of the power input module into vertical movement.

[0006] According to the present invention, a high-precision servo valve transmission mechanism is provided. The power transmission module includes a housing, an interior cavity, and a central hole at the top of the housing, which communicates with the cavity. A plurality of needle rollers are fixedly arranged inside the cavity, located at the edge of the cavity and evenly spaced along the circumference of the cavity. A secondary cycloidal wheel is also provided inside the cavity, coaxially and fixedly connected to the power input module, and movably engaged with the plurality of needle rollers. A rotating shaft is fixedly connected to the bottom of the outer wall of the housing, coaxially and fixedly connected to the valve, and coaxially arranged with the housing. The secondary cycloidal wheel is eccentrically arranged with respect to the housing and the rotating shaft.

[0007] According to the present invention, a high-precision servo valve transmission mechanism is provided in which a plurality of arc-shaped grooves are provided on the side wall of the secondary cycloidal wheel, and the plurality of arc-shaped grooves are equally spaced along the circumferential direction of the side wall of the secondary cycloidal wheel, and the arc-shaped grooves are adapted to the needle roller wheel.

[0008] According to the present invention, a high-precision servo valve transmission mechanism is provided, wherein the valve is detachably connected to the support connection assembly via a fixing nut, and the valve is threadedly connected to a knob screw, which is coaxially and fixedly connected to the rotating shaft.

[0009] According to the present invention, a high-precision servo valve transmission mechanism is provided, wherein the knob screw is coaxially and fixedly connected to the rotating shaft via a coupling.

[0010] According to the present invention, a high-precision servo valve transmission mechanism is provided, wherein the power input module includes a servo motor, the servo motor is fixedly connected to the support connection assembly, and the output shaft of the servo motor is coaxially fixedly connected to the secondary cycloidal wheel.

[0011] According to the present invention, a high-precision servo valve transmission mechanism is provided, wherein the supporting connection assembly includes a vertical plate, an upper plate, a bottom plate, and a middle plate are fixedly connected to one side wall of the vertical plate, the upper plate is spaced apart from the middle plate and located above the middle plate, the bottom plate is spaced apart from the middle plate and located below the middle plate, the power input module is fixedly connected to the upper plate, the rotating shaft is rotatably and slidably connected to the middle plate, and the valve is fixedly connected to the bottom plate.

[0012] According to the present invention, a high-precision servo valve transmission mechanism is provided, wherein the rotating shaft is rotatably and slidably connected to the middle plate through a guide bearing.

[0013] Compared with existing technologies, the present invention has the following advantages and technical effects: By fixing the valve and the power input module to the same supporting connection assembly and using a power transmission module to float the valve and the power input module, the present invention ensures that the radial structural dimension of the power input module is minimized. This ensures both a compact transmission mechanism structure and high-precision transmission, making the transmission process smoother. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall invention.

[0016] Figure 2 This is a schematic diagram of the power transmission module of the present invention.

[0017] Figure 3 This is a schematic diagram of the cycloidal wheel and needle roller of the present invention.

[0018] Figure 4 This is a schematic diagram of the valve of the present invention.

[0019] Among them, 1. Vertical plate; 2. Top plate; 3. Bottom plate; 4. Middle plate; 5. Servo motor; 6. Housing; 7. Rotating shaft; 8. Guide bearing; 9. Coupling; 10. Valve; 11. Fixing nut; 12. Knob screw; 13. Secondary cycloidal wheel; 14. Needle roller; 15. Arc groove. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1 to 4 As shown, the present invention provides a high-precision servo valve transmission mechanism, comprising: a support connection assembly; a power input module disposed on the support connection assembly, the power input module being used to provide power input; a valve 10 disposed on the support connection assembly; and a power transmission module disposed on the support connection assembly, the power transmission module being located between the power input module and the valve 10, the power transmission module being used to transmit the power from the power input module to the valve 10 to control the valve 10 to open or close; the movement direction of the power transmission module includes rotational movement in the horizontal plane and up-and-down movement in the vertical plane, the power transmission module realizing the opening or closing of the valve 10 by converting the rotational movement of the power input module into up-and-down movement.

[0023] By fixing the valve and power input module to the same support connection assembly, and using a power transmission module to float the valve and power input module, the radial structural dimension of the power input module is minimized. This ensures both a compact transmission mechanism structure and high-precision transmission, resulting in a smoother transmission process.

[0024] Furthermore, the power transmission module includes a housing 6, inside which a cavity is formed. A central hole is formed at the top of the housing 6, communicating with the cavity. Several needle rollers 14 are fixedly arranged inside the cavity, located at the edge of the cavity and evenly spaced along the circumference of the cavity. A secondary cycloidal wheel 13 is also arranged inside the cavity, coaxially and fixedly connected to the power input module. The secondary cycloidal wheel 13 and the several needle rollers 14 are movably engaged. A rotating shaft 7 is fixedly connected to the bottom of the outer wall of the housing 6, coaxially and fixedly connected to the valve 10. The rotating shaft 7 is coaxially arranged with the housing 6, and the secondary cycloidal wheel 13 is eccentrically arranged with the housing 6 and the rotating shaft 7.

[0025] When the power input module drives the secondary cycloidal wheel 13 to rotate, it further drives the outer shell 6 to rotate through the needle roller wheel 14, thereby driving the knob screw 12 to rotate through the rotating shaft 7. During the rotation of the knob screw 12, it in turn drives the outer shell 6, the rotating shaft 7, and the needle roller wheel 14 to float up and down, realizing the floating connection function of the power transmission module.

[0026] Furthermore, the side wall of the secondary cycloidal wheel 13 is provided with several arc-shaped grooves 15, which are equally spaced along the circumference of the side wall of the secondary cycloidal wheel 13, and the arc-shaped grooves 15 are adapted to the needle roller wheel 14.

[0027] The secondary cycloidal wheel 13 and the outer needle roller wheel 14 can also form a speed reduction device through the gear ratio, which can transmit power more smoothly.

[0028] Furthermore, the valve 10 is detachably connected to the support connection assembly via a fixing nut 11, and the valve 10 is threadedly connected to a knob screw 12, which is coaxially and fixedly connected to the rotating shaft 7.

[0029] When the knob screw 12 rotates relative to the valve 10, it can move up and down simultaneously.

[0030] Furthermore, the knob screw 12 is coaxially and fixedly connected to the rotating shaft 7 via the coupling 9.

[0031] Furthermore, the power input module includes a servo motor 5, which is fixedly connected to the support connection assembly, and the output shaft of the servo motor 5 is fixedly connected to the secondary cycloidal wheel 13 on the same axis.

[0032] When the servo motor 5 drives the secondary cycloidal wheel 13 to rotate, it further drives the housing 6 to rotate via the needle roller wheel 14. This, in turn, drives the knob screw 12 to rotate via the rotating shaft 7 and coupling 9. The rotation of the knob screw 12, in turn, causes the housing 6, rotating shaft 7, coupling 9, and needle roller wheel 14 to float up and down, thus achieving the floating connection function of the power transmission module. The needle roller wheel 14 slides in contact with the secondary cycloidal wheel 13 during its up-and-down movement.

[0033] Furthermore, the supporting connection assembly includes a vertical plate 1, with an upper plate 2, a bottom plate 3, and a middle plate 4 fixedly connected to one side wall of the vertical plate 1. The upper plate 2 and the middle plate 4 are spaced apart and located above the middle plate 4, while the bottom plate 3 and the middle plate 4 are spaced apart and located below the middle plate 4. The power input module is fixedly connected to the upper plate 2, the rotating shaft 7 is rotatably and slidably connected to the middle plate 4, and the valve 10 is fixedly connected to the bottom plate 3.

[0034] Furthermore, the rotating shaft 7 is rotatably and slidably connected to the middle plate 4 via the guide bearing 8.

[0035] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0036] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope of the present invention.

Claims

1. A high-precision servo valve transmission mechanism, characterized in that, include: Support connection components; A power input module is disposed on the support connection assembly, and the power input module is used to provide power input; A valve (10) is provided on the support connection assembly; A power transmission module is disposed on the support connection assembly. The power transmission module is located between the power input module and the valve (10). The power transmission module is used to transmit the power of the power input module to the valve (10) to control the valve (10) to open or close. The movement direction of the power transmission module includes rotational movement in the horizontal plane and up-and-down movement in the vertical plane. The power transmission module realizes the opening or closing of the valve (10) by converting the rotational movement of the power input module into up-and-down movement. The power transmission module includes a housing (6), inside which a cavity is formed. A central hole is formed at the top of the housing (6) and communicates with the cavity. A plurality of needle rollers (14) are fixedly arranged inside the cavity. The plurality of needle rollers (14) are located at the edge of the cavity and are evenly spaced along the circumference of the cavity. A secondary cycloidal wheel (13) is also provided inside the cavity. The secondary cycloidal wheel (13) is coaxially fixedly connected to the power input module. The secondary cycloidal wheel (13) is movably engaged with the plurality of needle rollers (14). A rotating shaft (7) is fixedly connected to the bottom of the outer wall of the housing (6). The rotating shaft (7) is coaxially fixedly connected to the valve (10). The rotating shaft (7) is coaxially arranged with the housing (6). The secondary cycloidal wheel (13) is eccentrically arranged with the housing (6) and the rotating shaft (7).

2. The high-precision servo valve transmission mechanism according to claim 1, characterized in that, The side wall of the secondary cycloidal wheel (13) is provided with a plurality of arc-shaped grooves (15), and the plurality of arc-shaped grooves (15) are equally spaced along the circumferential direction of the side wall of the secondary cycloidal wheel (13), and the arc-shaped grooves (15) are adapted to the needle roller (14).

3. The high-precision servo valve transmission mechanism according to claim 1, characterized in that, The valve (10) is detachably connected to the support connection assembly via a fixing nut (11). The valve (10) is threadedly connected to a knob screw (12), which is coaxially fixedly connected to the rotating shaft (7).

4. The high-precision servo valve transmission mechanism according to claim 3, characterized in that, The knob screw (12) is coaxially and fixedly connected to the rotating shaft (7) via a coupling (9).

5. The high-precision servo valve transmission mechanism according to claim 1, characterized in that, The power input module includes a servo motor (5), which is fixedly connected to the support connection assembly. The output shaft of the servo motor (5) is coaxially fixedly connected to the secondary cycloidal wheel (13).

6. The high-precision servo valve transmission mechanism according to claim 1, characterized in that, The supporting connection assembly includes a vertical plate (1), on one side wall of which an upper plate (2), a bottom plate (3), and a middle plate (4) are fixedly connected. The upper plate (2) is spaced apart from the middle plate (4) and located above the middle plate (4). The bottom plate (3) is spaced apart from the middle plate (4) and located below the middle plate (4). The power input module is fixedly connected to the upper plate (2). The rotating shaft (7) is rotatably and slidably connected to the middle plate (4). The valve (10) is fixedly connected to the bottom plate (3).

7. A high-precision servo valve transmission mechanism according to claim 6, characterized in that, The rotating shaft (7) is rotatably and slidably connected to the middle plate (4) via a guide bearing (8).

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